Dr. Louis Neyman, 84, a dentist in Washington from 1933 until his retirement in 1961, died of a heart ailment June 2 in Guadalajara, Mexico, where he and his wife spent the winters.

In 1950, Dr. Neyman helped found the International Academy of Oral Dynamics to further the applications of bite correction in restoring and maintaining a healthy mouth. He was the first chairman of the Academy's board of councilors and later its president.

He also helped develop a training film. "Bite Correction," used in universities in this country and abroad. He had held clinics in this country, England, the Scandinavian countries and Mexico.

Dr. Neyman was born in Chicago and grew up in Butte, Mont. He graduated from Northwestern University Dental School and practiced dentistry in Bozeman, Mont., before coming to Washington in 1933.

In addition to the Academy of Oral Dynamics, he was a member of the American Dental Association, the D.C. Dental Society and the Octa Dent Club of Northwestern University.

He is survived by his wife, Dorothy Stubbs, of the home in Washington; two sisters, Fanney Litvin, of Washington, and Lena Rudolph, of Albuquerque, N.M., and two brothers, Joseph Neyman, of San Jose, Calif., and Dr. Nathan Neyman, of Arlington.